Centripetal force exploration demonstration device based on HX711 force sensor
Through the centripetal force exploration demonstration device based on the HX711 force sensor, the stepper motor and high-precision measurement components are used to solve the problem that traditional devices cannot accurately measure centripetal force, and high-precision data acquisition and intuitive display are achieved.
Patent Information
- Application Number
- CN202422354145.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-26
AI Technical Summary
Traditional centripetal force demonstration devices cannot accurately measure centripetal force, and the data display method is single, and lack accurate force signal conversion and data acquisition and processing systems.
The HX711 force sensor is used to combine stepper motors and high-precision measurement components. The trolley is driven to perform uniform circular motions through an adjustable speed stepper motor. The HX711 sensor is used to measure centripetal force, combined with DuPont wire and bearing rotation ring to avoid wire entanglement, and data reading is achieved using Phyphox software.
It realizes accurate measurement of centripetal force, fast data acquisition and high accuracy, with an error of less than 5%, providing an intuitive display of the existence and effect of centripetal force.
Smart Images
Figure CN223155584U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of centripetal force exploration, in particular to a centripetal force exploration demonstration device based on an HX711 force sensor. Background Technique
[0002] Constructing a centripetal force exploration demonstration device based on an HX711 force sensor enables the transition from abstract theoretical learning to the perception of actual physical phenomena. Moreover, in related scientific research and engineering fields, it can also provide a convenient and efficient experimental tool for researchers and engineers to further explore the action mechanism of centripetal force in different environments and complex systems;
[0003] The traditional centripetal force demonstrator consists of a rotating arm, a mass and length adjustment device. The motor drives the rotating arm to change the mass of the pendulum ball and the arm length to qualitatively demonstrate the centripetal force. The device based on the HX711 force sensor includes a sensor, a rotating platform, etc., which can convert the centripetal force into an electrical signal to quantitatively explore related factors;
[0004] In the prior art, traditional centripetal force demonstration devices mostly focus on qualitative demonstration. For example, when changing the factors affecting the centripetal force, only the changing trend of the centripetal force can be roughly presented, and the specific values of the centripetal force under different conditions cannot be accurately given. Moreover, its data display method is relatively single, lacking an accurate force signal conversion and data acquisition and processing system. Therefore, a centripetal force exploration demonstration device based on an HX711 force sensor is proposed to solve the above problems. Content of the Utility Model
[0005] In order to make up for the above deficiencies, the utility model provides a centripetal force exploration demonstration device based on an HX711 force sensor, aiming to improve the problem that traditional centripetal force demonstration devices in the prior art usually can only qualitatively demonstrate the changing trend of centripetal force and lack an accurate data measurement and display system.
[0006] To achieve the above purpose, the utility model adopts the following technical scheme: A centripetal force exploration demonstration device based on an HX711 force sensor, including a bottom plate. A stepping motor is fixedly connected to the upper right side of the bottom plate. The output end of the stepping motor is fixedly connected to the middle lower part of a box-shaped track. A mobile phone is arranged on the left side inside the box-shaped track. A second fixed pulley is fixedly connected to the middle side inside the box-shaped track. An experimental trolley slides on the right side inside the box-shaped track. An L-shaped plate is fixedly connected to the upper left side of the bottom plate. A measuring component is arranged on the middle upper part of the L-shaped plate. A first fixed pulley is fixedly connected to the upper right side of the L-shaped plate. One end of a Dupont wire one is fixedly connected to the measuring component. The other end of the Dupont wire one passes through the first fixed pulley and is fixedly connected to one end of a bearing swivel. The other end of the bearing swivel is fixedly connected to one end of a Dupont wire two. The other end of the Dupont wire two passes through the second fixed pulley and is fixedly connected to the middle left part of the experimental trolley;
[0007] As a further description of the above technical solution: a measuring component, the measuring component includes a self-made vernier scale, the self-made vernier scale is fixedly connected to the upper middle side of the L-shaped plate, the moving end of the self-made vernier scale is respectively fixedly connected to the HX711 module and the HX711 sensor, the input end of the HX711 sensor is fixedly connected to a DuPont line 1, the upper left side of the L-shaped plate is fixedly connected to an Arduino uno development board, the Arduino uno development board is electrically connected to the segment code display screen through a wire, the Arduino uno development board is electrically connected to the HX711 module through a wire, and the HX711 module is electrically connected to the HX711 sensor through a wire;
[0008] As a further description of the above technical solution: a laptop is arranged on the upper left side of the base plate, and a data terminal of the laptop is electrically connected to an Arduino uno development board;
[0009] As a further description of the above technical solution: a switching power supply is arranged on the upper middle side of the bottom plate, a speed regulating knob and a driver are arranged on the upper front side of the bottom plate, and the switching power supply is electrically connected to the speed regulating knob, the driver, and the stepping motor respectively;
[0010] As a further description of the above technical solution: an electronic scale and a weight are respectively arranged on the upper right side of the bottom plate;
[0011] As a further description of the above technical solution: the material of the box-shaped track is acrylic plate.
[0012] The utility model has the following beneficial effects:
[0013] 1. In the utility model, the traditional hand-cranked rotation is changed, and the box-shaped track is driven to rotate by an adjustable speed stepping motor, thereby driving the trolley at one end of the guide rail to rotate, so that the trolley can perform stable uniform circular motion, achieving the purpose of automatic and precise control.
[0014] 2. In this utility model, a high-precision HX711 sensor is used to measure the centripetal force of an object in uniform circular motion. The data is collected quickly and the measurement accuracy is high. Through repeated experiments, it is found that the experimental error can be controlled within 5%. It has achieved a leap from semi-quantitative exploration to quantitative exploration. At the same time, students can truly feel the existence and effect of centripetal force through the change of the indication.
[0015] 3. In the utility model, the wire used to pull the trolley is a strong, non-stretchable plastic DuPont wire, which can effectively avoid the problem that the conventional cotton wire is deformed due to twisting, causing the rotation radius of the trolley to change and cause a large error.
[0016] 4. In the present utility model, a bearing swivel is used in the connection between the trolley and the HX711 sensor, which can effectively solve the problem of entanglement caused by the continuous rotation of the connecting wire when the guide rail rotates.
[0017] 5. In the present utility model, by using a smartphone equipped with Phyphox software and screen mirroring technology, the information-based and convenient reading of angular velocity is realized. Description of the Drawings
[0018] Figure 1 is the overall structure diagram of the centripetal force exploration demonstration device based on the HX711 force sensor proposed by the present utility model;
[0019] Figure 2 is the top view of the centripetal force exploration demonstration device based on the HX711 force sensor proposed by the present utility model;
[0020] Figure 3 is the left view of the centripetal force exploration demonstration device based on the HX711 force sensor proposed by the present utility model;
[0021] Figure 4 is the schematic diagram of the sensor electrical connection of the centripetal force exploration demonstration device based on the HX711 force sensor proposed by the present utility model.
[0022] Legend Explanation:
[0023] 1. Base plate; 2. Laptop computer; 3. Arduino uno development board; 4. Segment code display screen; 5. Self-made vernier scale; 6. HX711 module; 7. HX711 sensor; 8. Fixed pulley 1; 9. Fixed pulley 2; 10. Dupont wire 1; 11. Bearing swivel; 12. Experimental trolley; 13. Box-shaped track; 14. Speed control knob; 15. Switching power supply; 16. Driver; 17. Electronic scale; 18. Weights; 19. Stepper motor; 20. L-shaped plate; 21. Mobile phone; 22. Dupont wire 2. Detailed Implementation Modes
[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0025] Refer to Figures 1 - 4, an embodiment provided by the present utility model: a centripetal force exploration demonstration device based on an HX711 force sensor, comprising a bottom plate 1. On the upper right side of the bottom plate 1, a stepping motor 19 is fixedly connected. The stepping motor 19 adopts the YK42HB47-01A model of Yankong. The output end of the stepping motor 19 is fixedly connected to the middle lower side of the box-shaped track 13. A switching power supply 15 is arranged on the upper middle side of the bottom plate 1. A speed regulation knob 14 and a driver 16 are respectively arranged on the upper front side of the bottom plate 1. The switching power supply 15 is electrically connected to the speed regulation knob 14, the driver 16, and the stepping motor 19 respectively. It changes the traditional hand-cranked rotation mode and instead uses the stepping motor 19 to drive the box-shaped track 13 to rotate, thereby driving the experimental trolley 12 at one end of the box-shaped track 13 to do stable uniform circular motion. The rotation speed of the box-shaped track 13 can be adjusted by the speed regulation knob 14. The box-shaped track 13 is made of acrylic plate, which can better observe the movement of the experimental trolley 12. A mobile phone 21 is arranged on the left side inside the box-shaped track 13. The mobile phone 21 is installed with Phyphox software. A laptop computer 2 is arranged on the upper left side of the bottom plate 1. The data end of the laptop computer 2 is electrically connected to an Arduino uno development board 3. A smart phone 21 installed with Phyphox software is placed at the other end of the box-shaped track 13 for measuring the rotational angular velocity of the experimental trolley 12. At the same time, through a local area network connection, the laptop computer 2 is used to control the startup of the Phyphox software on the mobile phone 21 and read the angular velocity data;
[0026] A fixed pulley two 9 is fixedly connected to the middle side inside the box-shaped track 13. An experimental trolley 12 slides on the right side inside the box-shaped track 13. A left side of the upper part of the bottom plate 1 is fixedly connected with an L-shaped plate 20. A measuring component is arranged in the middle side of the upper part of the L-shaped plate 20. The measuring component includes a self-made vernier scale 5. The self-made vernier scale 5 is fixedly connected to the middle side of the upper part of the L-shaped plate 20. The mobile ends of the self-made vernier scale 5 are respectively fixedly connected with an HX711 module 6 and an HX711 sensor 7. An input end of the HX711 sensor 7 is fixedly connected with a Dupont wire one 10. A fixed pulley one 8 is fixedly connected to the right side of the upper part of the L-shaped plate 20. One end of the Dupont wire one 10 to which the measuring component is fixedly connected. The other end of the Dupont wire one 10 passes through the fixed pulley one 8 and is fixedly connected with one end of a bearing swivel 11. The other end of the bearing swivel 11 is fixedly connected with one end of a Dupont wire two 22. The other end of the Dupont wire two 22 passes through the fixed pulley two 9 and is fixedly connected to the middle side of the left part of the experimental trolley 12. The rotation radius of the trolley is measured by using the self-made vernier scale. Since the total length of the Dupont wire one 10 and the Dupont wire two 22 connecting the experimental trolley 12 and the HX711 sensor 7 remains unchanged. When moving the position of the cursor on the HX711 sensor 7, it is equivalent to adjusting the rotation radius of the experimental trolley 12. The change amount of the cursor position is equal to the change amount of the rotation radius of the experimental trolley 12. Based on this, the rotation radius of the experimental trolley 12 is measured. In the device, the Dupont wire one 10 and the Dupont wire two 22 which are made of hard texture and not easy to deform are selected as the connecting wires, and the bearing swivel 11 is used, which can effectively avoid the winding of the Dupont wire one 10 and the Dupont wire two 22 when the experimental trolley 12 rotates. An Arduino uno development board 3 is fixedly connected to the upper left side of the L-shaped plate 20. The Arduino uno development board 3 is electrically connected to the segment code display screen 4 through a wire. The Arduino uno development board 3 is electrically connected to the HX711 module 6 through a wire. The HX711 module 6 is electrically connected to the HX711 sensor 7 through a wire. By using the HX711 module 6, through the HX711 sensor 7 of the Arduino uno development board 3, the pulling force magnitude can be directly displayed through the segment code display screen 4. The Dupont wire one 10 connecting the experimental trolley 12 is tied to the front end of the HX711 force sensor 7. From the two-force balance, it can be known that the pulling force measured by the HX711 sensor 7 at this time is equal to the centripetal force of the experimental trolley 12 moving in uniform circular motion. An electronic scale 17 and weights 18 are respectively arranged on the upper right side of the bottom plate 1. The mass of the experimental trolley 12 is measured by using the electronic scale 17, and the mass of the object in circular motion is changed by adding weights 18 to the experimental trolley 12.
[0027] Working principle: First, use an electronic scale 17 to measure the mass of the experimental trolley 12, and change the mass of the object in circular motion by adding weights 18 to the experimental trolley 12. Then, by changing the traditional hand-cranked rotation mode, instead use a stepper motor 19 to drive the box-shaped track 13 to rotate, thereby driving the experimental trolley 12 at one end of the box-shaped track 13 to do stable uniform circular motion. The rotation speed of the box-shaped track 13 can be adjusted through the speed control knob 14. Place a smartphone 21 installed with Phyphox software at the other end of the box-shaped track 13 to measure the rotational angular velocity of the experimental trolley 12. At the same time, through a local area network connection, use a laptop 2 to control the startup of the Phyphox software in the mobile phone 21 and read the angular velocity data; use a self-made vernier scale 5 to measure the radius of rotation of the experimental trolley 12. Since the total length of Dupont wire 10 and Dupont wire 22 connecting the experimental trolley 12 and the HX711 sensor 7 remains unchanged, when moving the position of the cursor downstream of the HX711 sensor 7, it is equivalent to adjusting the radius of rotation of the experimental trolley 12. The change in the cursor position is equal to the change in the radius of rotation of the experimental trolley 12. Then use the HX711 module 6, connect the HX711 sensor 7 through the Arduino uno development board 3, and the pulling force can be directly displayed on the segment display 4. Dupont wire 10 connecting the experimental trolley 12 is tied to the front end of the HX711 sensor 7. According to the two-force balance, the pulling force measured by the HX711 sensor 7 at this time is equal to the centripetal force of the experimental trolley 12 doing uniform circular motion, and thus the radius of rotation of the experimental trolley 12 is measured. In the device, a hard and non-deformable Dupont wire is selected as the connecting wire, and a bearing swivel 11 is used to effectively avoid the winding of the Dupont wire when the experimental trolley 12 rotates.
[0028] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A centripetal force exploration demonstration device based on the HX711 force sensor, including a bottom plate (1), characterized in that: On the upper right side of the bottom plate (1), a stepping motor (19) is fixedly connected. The output end of the stepping motor (19) is fixedly connected to the middle side of the lower part of the box-shaped track (13). Inside the box-shaped track (13), a mobile phone (21) is arranged on the left side. In the middle side of the inside of the box-shaped track (13), a second fixed pulley (9) is fixedly connected. On the right side of the inside of the box-shaped track (13), an experimental trolley (12) slides. On the upper left side of the bottom plate (1), an L-shaped plate (20) is fixedly connected. In the middle side of the upper part of the L-shaped plate (20), a measuring component is arranged. On the upper right side of the L-shaped plate (20), a first fixed pulley (8) is fixedly connected. One end of a Dupont wire one (10) is fixedly connected to the measuring component. The other end of the Dupont wire one (10) passes through the first fixed pulley (8) and is fixedly connected to one end of a bearing swivel (11). The other end of the bearing swivel (11) is fixedly connected to one end of a Dupont wire two (22). The other end of the Dupont wire two (22) passes through the second fixed pulley (9) and is fixedly connected to the middle side of the left part of the experimental trolley (12).
2. The centripetal force exploration demonstration device based on the HX711 force sensor according to claim 1, characterized in that: Measuring component, the measuring component includes a self-made vernier scale (5). The self-made vernier scale (5) is fixedly connected to the middle side of the upper part of the L-shaped plate (20). The mobile ends of the self-made vernier scale (5) are respectively fixedly connected with an HX711 module (6) and an HX711 sensor (7). The input end of the HX711 sensor (7) is fixedly connected with a Dupont wire one (10). On the upper left side of the L-shaped plate (20), an Arduino uno development board (3) is fixedly connected. The Arduino uno development board (3) is electrically connected to a segment code display screen (4) through a wire. The Arduino uno development board (3) is electrically connected to the HX711 module (6) through a wire. The HX711 module (6) is electrically connected to the HX711 sensor (7) through a wire.
3. The centripetal force exploration demonstration device based on the HX711 force sensor according to claim 1, wherein: On the upper left side of the bottom plate (1), a laptop computer (2) is arranged. The data end of the laptop computer (2) is electrically connected to the Arduino uno development board (3).
4. The centripetal force exploration demonstration device based on the HX711 force sensor according to claim 1, characterized in that: On the upper middle side of the bottom plate (1), a switching power supply (15) is arranged. On the front side of the upper part of the bottom plate (1), a speed regulation knob (14) and a driver (16) are respectively arranged. The switching power supply (15) is electrically connected to the speed regulation knob (14), the driver (16), and the stepping motor (19) respectively.
5. The centripetal force exploration demonstration device based on the HX711 force sensor according to claim 1, characterized in that: On the upper right side of the bottom plate (1), an electronic scale (17) and weights (18) are respectively arranged.
6. The centripetal force exploration demonstration device based on the HX711 force sensor according to claim 1, characterized in that: The box-shaped track (13) is made of acrylic board.